碳化三聚氰胺泡沫负载ZIF-67活化过硫酸氢钾降解罗丹明B

doi:10.11896/cldb.21040213

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Abstract In this work, an efficient heterogeneous catalyst was prepared through in-situ growth of ZIF-67 on carbonized melamine foam. The crystal structure, specific surface area and morphology of CMF/ZIF-67 were characterized by X-ray diffraction (XRD), nitrogen adsorption apparatus and scanning electron microscopy (SEM). Rhodamine B (RhB) degradation was employed as a model test for evaluating potassium peroxymonosulfate (PMS) activation. The results show that the CMF/ZIF-67 heterogeneous catalyst exhibites excellent efficiency for PMS activation, and the degradation rate of RhB is up to 98% in 30 min. The other factors which could influence PMS activation were also analyzed as well, for instance, catalyst dosage, PMS dosage, pH value, temperature and RhB concentration. The experimental results show that the degradation efficiency of RhB also increases with the increase of the dosage of CMF/ZIF-67 and PMS. The degradation rate of RhB can reach more than 98% in the initial pH range of 5—7. The effect of temperature on the degradation rate of RhB conforms to the Arrhenius model, and the degradation process is a surface reaction controlled process. The results of the free radical capture experiment show that the sulfate radicals are the dominant active species for RhB degradation. After four cycles, the degradation rate of RhB still maintains above 90% with CMF/ZIF-67 catalyst. The catalyst has potential application in the field of degradation of dye wastewater due to its excellent cycling stability.

Key words： carbonized melamine foam ZIF-67 potassium peroxymonosulfate heterogeneous catalyst advanced oxidation process

Published: 10 September 2022 Online: 2022-09-10

CLC number:

O614

Fund:International Project on Scientific and Technological Cooperation in China ( 2018KW-052), the Basic Scientific Research of Central Colleges (300102310301) and Undergraduates Innovation and Entrepreneurship Project.

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	WANG Yuanyuan
	YAN Xin
	AI Tao
	ZHOU Xin
	YU Kang
	NIU Yanhui

Cite this article:

WANG Yuanyuan,YAN Xin,AI Tao, et al. Carbonized Melamine Foam Loaded with ZIF-67 Activated Peroxymonosulfate for Degradation of Rhodamine B[J]. Materials Reports, 2022, 36(17): 21040213-7.

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http://www.mater-rep.com/EN/10.11896/cldb.21040213 OR http://www.mater-rep.com/EN/Y2022/V36/I17/21040213

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